Cobbers Crusher, Mini Rock Crusher, turns your 5” angle grinder into a mini rock crusher, fit to a cordless angle grinder and you can use it anywhere needed, these are made to universally fit any 5” angle grinder with 14mm thread, comes with operating instructions, made by Edens engineering temora that’s been established since 2002, built to last with solid one piece billet driveshaft that’s not like others with welded plates on the driveshaft that fail and break apart after excessive use, ideal for doing test samples, a product trusted and used by exploration company’s across Australia and overseas, can turn 1kg of quartz rocks into dust in 2 mins, check out the YouTube videos “cobbers crusher”